It's that grin that does it, honestly, and Remus sort of hates how useless he is in the face of that particular smile of Sirius's. His shoulders slump a little, both in defeat and relaxation, and Remus shakes his head, looking down into his tankard with a rueful little smile.

"Can't believe I'm agreeing to this, but...yeah, alright. Ah—girl in the middle, yeah?"